#container{
    width: 600px;
    height: 256px;
    position: relative;
    overflow: hidden;
    margin: 50px auto;
}
#container .box{
    position: absolute;
    width: 4800px;
    height: 256px;
    left: -600px;
    font-size: 0;
}
#container .box img{
    width: 600px;
    height: 256px;
}
#container .tags{
    font-size: 0;
    position: absolute;
    left: 50%;
    margin-left: -58px;
    top: 85%;
}
#container .tags span{
    margin: 0 4px;
    display: inline-block;
    width: 15px;
    height: 15px;
    background-color: red;
    border-radius: 100%;
    cursor: pointer;
}
#container .tags .active{
    width: 14px;
    height: 14px;
    background-color: white;
    border: 1px solid grey;
}
#container .arrow{
    display: none;
    text-decoration: none;
    font-size: 18px;
    width: 40px;
    height: 40px;
    background-color: #a3a3a3;
    opacity: 0.9;
    color: #ffffff;
    text-align: center;
    line-height: 40px;
}
#container:hover .arrow{
    display: inline-block;
}
#prev{
    position: absolute;
    left: 20px;
    top: 50%;
    margin-top: -20px;
}
#next{
    position: absolute;
    right: 20px;
    top: 50%;
    margin-top: -20px;
}
#container .arrow:hover{
    background-color: #666666;
}
